Automatic stop mechanism for phonograph-machines.



M. B. SELTER.

AUTOMATIC STOP MECHANISM FOR PHONOGRAPH MACHINES.

P l ED OCT. 9.1916.

1,2%4,551 Patented Oct. 30, 1917.

2 SHEETS-SHEET l.

H //1 n: 56 i' 1 M. B. SELTER.

AUTOMATIC STOP MECHANISM FOR PHONOGRAPH MACHINES.

APPLICATION FILED OCT- 9. 1916.

' Patented Oct. 30,1917.

2 SHEETS-SHEET 2.'

UNITED STATES PATENT OFFICE.

MILO B. SELTEB, OF COLOMA, MICHIGAN, ASSIGNOR TO PLAYEBPHONE' TALKINGMACHINE COMPANY, A CORPORATION OF ILLINOIS.

AUTOMATIC STOP MECHANISM FOR PHONOGRAPH-MACHINES.

Specification of Letters Iatent.

Patented Oct. 30, 1917.

To all whom it may concern:

Be it known that I, MILO B. SELTER, a citizen of the United States, anda resident of the city of Coloma, in the county of Berrien and State ofMichigan, have in vented certain new and useful Improvements inAutomatic Stop Mechanism for.

Phonograph-Machines; and I do hereby declare that the following is afull, clear, and exact description of the same, reference being had tothe accompanying drawings,

and to the numerals of reference markedthereon, which form a part ofthis specification.

This invention relates to an improved form of automatic stop mechanismsfor association with a phonograph or talking machine whereon diskrecords are played, said mechanisms adapted to operate at the com-,

the disk record to be played so that at the completion of the playing ofthe record, the

carrying or driving means for the record is immediately brought to rest.

It is also an object of this invention to construct an automaticallyoperating mechanism for phonograph or talking machines adapted when therecorder arm is swung to playing position to set the driving means ofthe machine in operation and acting automatically when the recorder armis swung to its opposite extreme of movement at the completion ofplaying of the record, to bring said driving mechanism to rest.

It is also an important object of this invention to construct anautomatic stop mechanism or talking machines operated by movement of therecorder arm of the machine, movement thereof to initial playingposition serving to release the driving mechanisms and close theelectric circuit thereto and movement of said arm toward the otherextreme osition after travel across the record serving to release abrake mechanism and further cutting off the electric circuit to thedriving means so that the record played is brought immediately to restafter completion of playing thereof.

It is furthermore an important object of this invention to construct anautomatically operating stop mechanism for talking ma chines comprisingmeans actuatable by movement of the recorder arm. to initial playingposition to release the driving means and close the electric circuitthereto to set said driving means in operation and operating by movementacross the record into an opposite extreme position determined by anadjusting device set according to the size of the record to be played torelease the brake means and also releasing the switch mechanism frommovement into open position so that the record is brought to rest at thecompletion of the playing thereof.

It is finally an object of this invention to construct a simple type ofautomatic stop mechanism for talking machines operating to set thedriving means of the machine in operation when the recorder arm is movedtoward initial playing position, and to disconnect the drive of themachine after the completion of the playing of the record thereon.

The invention (in a preferred form) is illustrated in the drawings andhereinafter more fully described.

On the drawings:

Figure 1 is a top plan view of a talking machine equipped withmechanisms embodying the principles of my invention.

Fig. 2 is a fragmentary side view of the lower end of the recorder arm,showing a part of the mechanisms of the device.

Fig. 3 is a fragmentary front face view of the lowerend of the recorderarm, showing a part of the mechanisms of the device.

Fig. t is a fragmentary bottom plan view of the stop lever and itspivotal contact arm.

Fig. 5 is an edge view of the manually actuatable lever of the contactarm shown in Fig. 4.

Fig. 6 is a fragmentary top plan view of a portion of the releasemechanism with parts omitted.

Fig. 7 is a detail top plan view with parts in section and parts omittedof the mechanisms embodying the principles of my invention, andillustrating the operation in dotted lines.

Fig. 8 is a central vertical section with parts omitted and parts inelevation, taken through the mechanism shown in Fig. 7

Fig. 9 is a detail section taken on line 99 of Fig. 7.

Fig. 10 is a detail view at one end of the lever shown in Fig. i.

Fig. 11 is an edge view of the switch contact arm and brake thereon.

Fig. 12 is a detail section taken on line 12-42 of Fig. 4.

Fig. 13 is a sectional detail illustrating the switch mechanism of thedevice.

As shown on the drawings:

The reference numeral 1, indicates the casing of a talking machine whichis provided with a horizontal top plate or partition 2, above which isshown a horizontally rotatable record carrying disk 3, upon which arecord 4, to be played, is placed. Secured over an aperture in the topplate 2, is an annular member or ring 5, which is spherically concave onits interior afi ording a socket for the ball end 6, of the record armZ, thus permitting universal movement thereof within certain limits.Mounted beneath the record carrying table or disk 3, as shown in Fig. 7,is a stationary base plate 8, and secured through the forward endthereof is a pintle 9, on which the circular portion 10, of a brake andswitch lever 11, is pivoted, with a tail extension 12, of said leverextending outwardly on one side of the stationary plate 8.

Pivoted upon a stud 13, mounted in the 1 rear end of the base plate 8,is a forwardly extending lock lever 14, provided with a tooth 15, at theforward end thereof adapted to engage in a recess 16, provided in therounded portion 10, of said brake and switch lever, and connected uponsaid lock lever 14, is a tension spring 17, which is also connected tothe tail lever extension 12, of the brake arm. A lug 18, is struckupwardly fromthe base plate 8, and serves to limit the outward movementof the lock lever 14.

The outer end of said brake arm or lever 11, is curved and bent upwardlyas denoted by the reference numeral 19, and so disposed as to be readilycontacted by a vertically depending pin 20, secured adjustably in abracket extension 21, mounted on the front rounded portion of therecorder arm 7. A portion of said brake arm or lever 11, near the middlethereof, is struck upwardly and secured thereto is a friction brakeinsert 22, of any suitable material, disposed to contact against theinner surface of the depending flange portion of the disk carrying table3, as shown in Fig. 7. Also secured to the middle portion of the brakearm or lever 11, on the under surface thereof, is a resilient switchclosure element 23, shown in detail in Fig. 13, adapted in one positionof said brake arm to establish a closed circuit through terminal contactmembers 24 and 25, respectively, secured in the top plate 2, of themachine casing. Journaled upon the stud 9, above a collar or flange 26,formed thereon, is a lever 27, having an elongated hub extension 28,which extends upwardly around the pintle 9, as clearly shown in Fig. 8.Mounted above the lever 27 upon the hub 28, thereof, is a washer 29, andengaged over the hub 28, and above said washer, is alever30, providedwith a slot 31, which is engaged by a pin 32, formed on an extension 33,of the lever 14. Also mounted upon the hub 28, is a spring element at,afiording a plurality of resilient fingers bearing upon said lever 30,and secured upon the upper threaded end of the hub 28, are two lock nuts35 and 36, respectively, which are tightened down upon said resilientmember and thus hold the lever 30, the washer 29, and the lever 27 infrictional relation with one another.

Pivoted beneath the outer end of the lever 27, is a long curved handleor lever 37, shown in Fig. 7, having a short arm extension 38, integraltherewith, shown in detail in Figs. at and 12, on an extension of whichis adjustably mounted and movable against friction, an eccentric stop39, to limit movement of the arm 38, in one direction and a down-turnedlug 10, is provided on the extreme end of the lever 27, to l1m1t themovement of said arm in an opposite direction.

The operation is as follows: Arter a record has been placed upon amachine, the recorder arm 7 is placed into the position shown in Fig. 1,that is, the position which the arm will assume at the completion of theplaying of the record.

,Then the lever 37, is swung toward the pin 20, on the recorder armuntil the short pivoted arm 38, of said lever 37, strikes against thepin 20, and this position of the lever 27, which has rotated about itspivot 9, with movement of the lever 37, is the stop position for therecord to be played.

The recorder arm is then swung counterclockwise into initial playingposition, the pin 20. thereby striking the curved contact lever 1119,and swinging'the same about the pivot 9, in a clockwise directionagainst the stress. of the tension spring 17, sutficiently such that therecess 16, in said lever, shown in Fig. 6, rotates to a position to beengaged by the tooth 15, of the lock lever 14, which thus operates tohold said lever 1119, in the dotted line position shown in Fig. 2.Movement of the lever 1119, into this position, serves to close thecircuit between the switch contact terminals 24 and 25, by means of theswitch element 23, so that the electric drive for the carrying'disk 3,is set into operation. As the recorder arm travels across the record 4,during playing thereof, the pin extension 20, on said recorder armapproaches the lever 27, finally striking the same, whereby said leveris retated and due to frictional engagement with the lever 30, rotatessaid lever 30, which in turn, acts, due to the pin and slot engagementwith the lever 14, to shift said lock lever 14, outwardly therebyreleasing the tooth 15, from engagement with the recess. This allows thelever 11, to be retracted by its spring 17, thereby breaking theelectric circuit and applying the small friction brake shoe 22, againstthe inner periphery of the depending flange of the carrying table 3.

It is to be noted that in adjusting the stop lever 27, into position bymovement of the long curved handle 37, contact with the depending pin20, of the recorder arm, is had b means of the small short arm extension88, of the lever 37, which is limited in its pivotal movement on saidlever 27, by the eccentric stop 39, but upon return movement of the pin20, with the recorder arm during the playing of the record, said pin 20,strikes against the edge of the lever 27, and not against the short arm38. It is evidenttherefore that a further travel of the recorder arm andits pin 20, is necessary at the completion of the playing of the recordto strike the arm 27, to release the stop mechanism, than that requiredto obtain the position in which the recorder arm was placed when thelever 27, was moved by the lever 37 into stop position for thatparticular record.

This additional amount of movement or overtravel of the recorder arm'hich is required at the completion of the playing of the record insuresa complete movement thereof over the record so that the stop mechanismwill not accidentally be released prior to a complete playing oftherecord. The relative movement between the short arm 32, and the lever27, which provides for this overplay is'determined by the adjustment ofthe friction eccentric stop 39, which contacts with the rear edge oflever, 27, in the pivotal movement of the arm 37.

I am aware that various details of construction may be varied through awide range without departing from the principles of this invention, andI therefore do not purpose limiting the patent granted otherwise thannecessitated by the prior art.

I claim as my invention:

1. A stop mechanism for talking machines comprising a stationary plate,a lever pivo'ted thereon having a recess formed therein, a latch lever,a tooth thereon adapted for engagement with said recess, a springconnected both to said first mentioned lever and to said latch leveroperating to move said latch lever with the tooth thereon intoengagement with said recess, a trip lever adapted for contact by therecorder arm of the talking machine, a slotted lever held in fricaspring connected between said latch lever,

and brake arm to hold the same in looking engagement, a stop leveradapted forcontact by the recorder arm of the talking machine, meansoperated thereby to actuate said latch lever into release position torelease said brake arm and permit movement thereof to apply a brake uponthe talking machine under the stress of the spring connected thereto,and a mechanism pivoted to said means to permit a slight overtravel ofthe recorder arm before actuating the latch lever.

3. In a device of the class described, a brake arm, a latch leveradapted for engagement therewith, a spring connected to said latch leverand to said brake arm, a stop lever, a lever pivoted to the stop leveradapted to permit a slight overtravel of the recorder arm in onedirection, a lever frictionally connected thereto and connected to saidlatch lever to release the same whereby said brake arm is released frommovement by the stress of its spring and a friction brake means mountedin said brake arm.

4. A stop'mechanism for talking machines utilizing the movement of therecorder thereof, comprising a brake arm adapted to be shifted intorelease position by movement of the recorder arm to initial playingposition, a latch lever to hold said brake arm in released position, astop lever adapted for movement by said recorder arm upon its movementinto position at the completion of the playing of the record, means0perated by said stop lever to release said latch lever to release saidbrake arm and permit application thereof to the driving means of themachine to bring the same to rest, a lever pivoted on the latch lever,and means thereon adapted to permit a slight additional movement of thestop lever before releasing the latch lever.

5. A stop mechanism for phonographs comprising a brake lever, a latchlever, a stop lever, a spring connecting the latch and brake levers, alever pivoted to the stop lever, an eccentric secured thereto, andco-acting stops secured to the stop lever and lever pivoted thereon.

6. A stop mechanism for electrically driven talking machines comprisinga stationary plate, a lever pivoted thereon hav; ing a recess formedtherein, a switch element in said lever, a latch lever, a tooth thereonadapted for engagement with said recess, a spring connected both to saidfirst mentioned lever and to said latch lever operating to move saidlatch lever with the tooth thereon into engagement withi said recess,means adapted for contact by the recorder arm of the talking machine torelease said latch lever, and permit movement of said first mentionedlever under the stress of said spring out of engagement with said latchlever, and switch terminals normally closed by said switch elementadapted to be opened by movement of said switch element with said firstmentioned lever.

7. A stop mechanism for electrically driven talking machines comprisinga stationary plate, a brake arm pivoted thereon having a recess therein,a switch closure on said arm, a latch lever pivoted on said stationaryplate, a tooth formed thereon for engagement with said recess to holdsaid brake arm retracted, a spring connected between said latch leverand brake arm to hold the same in locking engagement, a stop leveradapted for contact by the recorder arm of the talking machine, meansoperated thereby to actuate said latch lever into release position torelease said brake arm to apply a brake upon a talking machine and breakthe electric circuit to the machine.

8. The combination with an electrically naaaeai driven phonographmachine, a brake arm, a latch lever adapted for engagement therewith, aspring connected to said latch lever and to said brake arm, a stoplever, a lever frictionally connected thereto and connected .to saidlatch lever to release the same whereby said brake arm is released frommovement by the stress of its spring, a friction brake means mounted insaid brake arm, and an electric switch connected on said arm andoperated to open circuit position as the arm is released.

9. A stop mechanism for electrically driven talking machines utilizingthe move ment of the recorder thereof, comprising a unitary brake andswitch arm adapted to be shifted into release position by movement ofthe recorder arm to initial playing position, a latch lever to hold saidbrake arm in released position, a stop lever adapted for movement bysaid recorder arm upon its movement into position at the completion ofthe playing of the record, and means operated by said stop lever torelease said latch lever to release said brake arm to break the electriccircuit and brake the driving means of the machine to bring the same torest.

in testimony whereof I have hereunto subscribed my name in the presenceof two subscribing witnesses.

MILO B. SELTER. Witnesses:

CHARLES W. HILLS, Jr, EARL M. HARDINE.

